fix: class를 className으로 모두 수정

Author: CisThard

src/components/Banner.js

@@ -2,10 +2,10 @@ import '../styles/Banner.css';
 
 export function Banner(children) {
   return (
-    <div class="banner_container">
-            <div class="banner_info">
-                <p class="banner_text">{children.toptext}</p>
-                <p class="banner_text">{children.bottomtext}</p>
+    <div className="banner_container">
+            <div className="banner_info">
+                <p className="banner_text">{children.toptext}</p>
+                <p className="banner_text">{children.bottomtext}</p>
                 {children.link && (
                     <a href="items.html">
                         <button className="look_around_button">구경하러 가기</button>
@@ -14,7 +14,7 @@ export function Banner(children) {
                 )}
 
             </div>
-            <img class="banner_image" src={children.image}/>
+            <img className="banner_image" src={children.image}/>
         </div>
   );
 }